Washington County topographic maps

Average elevation: 13 m

Average elevation: 95 m

Average elevation: 53 m

Average elevation: 15 m

Average elevation: 10 m

Average elevation: 89 m

Average elevation: 46 m

Average elevation: 32 m

Average elevation: 34 m

Average elevation: 51 m

Average elevation: 62 m

Average elevation: 42 m

Average elevation: 102 m

Average elevation: 48 m

Average elevation: 20 m

Average elevation: 23 m

Average elevation: 83 m

Columbia is located in a region of massive granite intrusion that was glaciated in the Wisconsin age. The glacier caused till (unsorted, poorly drained soil) to be deposited over the entire region. This poorly drained till formed bogs and ponds and altered the drainage pattern. The underlying granite caused…

Average elevation: 40 m

Average elevation: 210 m

Average elevation: 24 m

Average elevation: 34 m

Average elevation: 7 m

Average elevation: 32 m

Average elevation: 80 m

Average elevation: 37 m

Average elevation: 157 m